To provide a liquid composition for oral cavity which contains alkyl galactoside, effectively mask foreign taste thereof and furthermore does not make a user feel the flavor of lactone compound strongly, and is applied in foamed condition.SOLUTION: The liquid composition for oral cavity is provided which is stored in a foam ejection container and contains components (A) to (E), the (A)/(B-1) being 480-2000, and has pH of 8.0 to 11.0. (A) alkyl galactoside represented by isodecyl galactoside in an amount of 0.01 to 1.0 mass%； (B-1) lactone represented by γ-decalactone in an amount of 0.00005 to 0.00025 mass%； (C)cooling agent typified by L-menthol in an amount of 0.1 to 0.45 mass%； (D) a surfactant selected from an anionic surfactant, an amphoteric surfactant, and a nonionic surfactant in amount of 0.1 to 7 mass%； and (E) water.SELECTED DRAWING: None【課題】アルキルガラクトシドを含有し、その異味を効果的にマスキングしつつ、ラクトン化合物の香味を強く感じさせない、泡状に適用される液体口腔用組成物の提供。【解決手段】成分(A)～(E)を含有し、(A)／(B-1)が480～2000、pHが8.0～11.0である泡吐出容器入り液体口腔用組成物。(A)イソデシルガラクトシドに代表されるアルキルガラクトシド：0.01～1.0質量％、(B－１)γ－デカラクトンに代表されるラクトン：0.00005～0.00025質量％、(C)Ｌ－メントールに代表される冷感剤：0.1～0.45質量％、(D)アニオン界面活性剤、両性界面活性剤及びノニオン界面活性剤から選ばれる界面活性剤：0.1～７％、(E)水【選択図】なし
